* _Atlantis: The Birth of Legends_ (1998)
* _The Etruscan Chronicles: The Secrets of the Mysterious Civilization of Ancient Italy_ (2000)
* _The Secret History of the Templars: The Hidden Archive and the Legacy of the Middle Ages_ (2002)
* _The Great Goddess: The Secret Behind the Ancient Myths_ (2004)
* _The Sacred Symbols: The Secrets of Ancient Symbols and Their Influence on Cultural Traditions_ (2006)
* _The Lost Cities: Adventures with the Great Explorers of the Past_ (2008)
* _The Ancient Mysteries: Unsolved Riddles of the Past_ (2010)
* _The Golden Age: The History and Legacy of the Golden Age of Ancient Greece and Rome_ (2012)
* _The Dark Ages: The History and Legacy of the Dark Ages of European History_ (2014)
* _The Renaissance: The History and Legacy of the Renaissance Era in Europe_ (2016)
Television documentaries:
* _Atlantis: The Lost Continent_ (1998)
* _The Etruscan Enigma_ (2001)
* _The Knights Templar: Secrets and Mysteries_ (2003)
* _The Great Goddess: In Search of the Divine Feminine_ (2005)
* _The Sacred Symbols: Unveiling the Mysteries of Ancient Symbols_ (2007)
* _The Lost Cities: Adventures with the Great Explorers of the Past_ (2009)
* _The Ancient Mysteries: Unsolved Riddles of the Past_ (2011)
* _The Golden Age: The History and Legacy of the Golden Age of Ancient Greece and Rome_ (2013)
* _The Dark Ages: The History and Legacy of the Dark Ages of European History_ (2015)
* _The Renaissance: The History and Legacy of the Renaissance Era in Europe_ (2017)